I agree with everything you said but also, I only have 2 ears and sometimes it's a nice feeling to know that you have a reliable companion that you can listen to regardless of your mood. could be a magic carpet ride based on the analogy you've given. I, too, don't like the feeling of congestion in any way that's why IEM did not work for me, losing those small details that could have heard if enough space between notes and instruments are available within ones head. yes, I guess I prefer the sub-bass impact, the kick and a little oomph here and there but not necessarily bass volume with regards to bass preference. And as long as it does not cloud the rest of the frequency, I'm fine with it.
if i could only have one earbud, then i would be happy with just the Liebesleid alone (and ER4XR for IEM).. and that choice is based on after hearing many earbuds. it is to this day the most suited sound for me.
i do encourage you to find a fellow in your area that has one so that you can audition them of course.